#include<stdio.h>

int main(int arg = 404)
{
	printf("OK!");
	int number = 1;
	if (arg != 404)
	{
		number = arg;
	}
	
	if (number == 0)
	{
		printf("This is 1\n");
	}
	else if (number == 1)
	{
		printf("This is 2\n");
	}
	else if (number == 2)
	{
		printf("This is 3\n");
	}
	return 0;
}